DR. MARK S OBRIEN MD
NPI 1235188525
Internal Medicine in Grand Rapids, MI
NPI Status: Active since May 06, 2006
Contact Information
4070 LAKE DR SE
SUITE 201
GRAND RAPIDS, MI
ZIP 49546
Phone: (616) 774-8200
Fax: (616) 774-0304
Some details in this NPI profile have been updated in the NPI registry within the last 30 days.
- Individual
- Male
- Internal Medicine
- Accepts Insurance
- Medicare Quality Reporting
About MARK OBRIEN
This page provides the complete NPI Profile along with additional information for Mark Obrien, an internist established in Grand Rapids, Michigan with a medical specialization in Internal Medicine. The healthcare provider is registered in the NPI registry with number 1235188525 assigned on May 2006. The practitioner's primary taxonomy code is 207R00000X with license number MO048187 (MI). The provider is registered as an individual and his NPI record was last updated June 2026.
- NPI
- 1235188525
- Provider Name
- DR. MARK S OBRIEN MD
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 4070 LAKE DR SE SUITE 201 GRAND RAPIDS, MI 49546
- Location Phone
- (616) 774-8200
- Location Fax
- (616) 774-0304
- Mailing Address
- 4070 LAKE DR SE SUITE 201 GRAND RAPIDS, MI 49546
- Mailing Phone
- (616) 774-8200
- Mailing Fax
- (616) 774-0304
- Is Sole Proprietor?
- Yes
- Enumeration Date
- 05-06-2006
- Last Update Date
- 06-07-2026
- Code Navigator
An internist like Mark Obrien is a physician who has completed an internal medicine residency and is board-certified or board-eligible in an internist specialty. Internists are trained to care for adults of all ages for many different medical conditions. An internist typically monitors chronic physical conditions, identifies acute diseases, provides family planning, provides counseling about wellness and disease prevention, etc.
Location Map
Specialty - Primary Taxonomy
The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.
- Classification
Internal Medicine
- Taxonomy Code
- 207R00000X
- Type
- Allopathic & Osteopathic Physicians
- License No.
- MO048187
- License State
- MI
- Taxonomy Description
- A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Insurance Plans Accepted
According to publicly available information the provider might be accepting the following health plans from these health insurance companies:
- Blue Cross� Premier PPO Bronze Extra - PPO
- Blue Cross� Premier PPO Bronze Saver HSA - PPO
- Blue Cross� Premier PPO Bronze Secure - PPO
- Blue Cross� Premier PPO Gold - PPO
- Blue Cross� Premier PPO Gold Extra - PPO
- Blue Cross� Premier PPO Silver - PPO
- Blue Cross� Premier PPO Silver Extra - PPO
- Blue Cross� Premier PPO Silver Saver HSA - PPO
- Blue Cross� Premier PPO Value - PPO
*Please verify directly with this provider to make sure your insurance plan is currently accepted.
Quality Reporting
The provider participated in CMS Quality Payment Program. The Quality Payment Program aims to improve population health, reduce costs and improve the care received by Medicare beneficiaries. The following quality measures meet Medicare's statistical reporting standards. Not all providers report the same information, because not all providers give the same services to patients. The quality information is just a snapshot of some the care providers give to their patients. Reporting more or less information is not a reflection of quality.
| Quality Measure | Performance | Number of Patients |
|---|---|---|
| Annual registration in the Prescription Drug Monitoring Program | Yes | N/A |
| Annual registration by eligible clinician or group in the prescription drug monitoring program of the state where they practice. Activities that simply involve registration are not sufficient. MIPS eligible clinicians and groups must participate for a minimum of 6 months. | ||
| Consultation of the Prescription Drug Monitoring Program | Yes | N/A |
| Clinicians would attest to reviewing the patients’ history of controlled substance prescription using state prescription drug monitoring program (PDMP) data prior to the issuance of a Controlled Substance Schedule II (CSII) opioid prescription lasting longer than 3 days. For the transition year, clinicians would attest to 60 percent review of applicable patient’s history. For the Quality Payment Program Year 2 and future years, clinicians would attest to 75 percent review of applicable patient’s history performance. | ||
| Electronic submission of Patient Centered Medical Home accreditation | Yes | N/A |
| I attest that I am a Patient Centered Medical Home (PCMH) or Comparable Specialty Practice that has achieved certification from a national program, regional or state program, private payer, or other body that administers patient-centered medical home accreditation and should receive full credit for the Improvement Activities performance category. | ||
| Engagement of New Medicaid Patients and Follow-up | Yes | N/A |
| Seeing new and follow-up Medicaid patients in a timely manner, including individuals dually eligible for Medicaid and Medicare. A timely manner is defined as within 10 business days for this activity. | ||
| Health Information Exchange | 50% | 20 |
| The MIPS eligible clinician that transitions or refers their patient to another setting of care or health care clinician (1) uses CEHRT to create a summary of care record; and (2) electronically transmits such summary to a receiving health care clinician for at least one transition of care or referral. | ||
| Provide Patient Access | 5% | 20 |
| At least one patient seen by the MIPS eligible clinician during the performance period is provided timely access to view online, download, and transmit to a third party their health information subject to the MIPS eligible clinician's discretion to withhold certain information. | ||
| Security Risk Analysis | Yes | N/A |
| Conduct or review a security risk analysis in accordance with the requirements in 45 CFR 164.308(a)(1), including addressing the security (to include encryption) of ePHI data created or maintained by certified EHR technology in accordance with requirements in 45 CFR164.312(a)(2)(iv) and 45 CFR 164.306(d)(3), and implement security updates as necessary and correct identified security deficiencies as part of the MIPS eligible clinician's risk management process. | ||
Reviews for DR. MARK S OBRIEN MD
There are currently no reviews for this provider. Be the first person to share your experience with this provider by filling out our review form. Your insights are appreciated and will help others make informed decisions.
NPI NPI Number Validation
How NPI Validation Works
The NPI validation process uses the ISO-standard Luhn algorithm, a mathematical "handshake", to ensure that a provider's 10-digit ID is authentic and free of common typing errors.
To verify the NPI 1235188525, we treat the final digit (5) as the Check Digit—the target answer we need to reach. The process begins by taking the first nine digits and adding a constant value of 24, which accounts for the "80840" prefix required for all U.S. health identifiers. We then double every other digit starting from the right and sum the individual digits of those results together. For this specific NPI, that total comes to 65. The final step is to find the difference between that total and the next multiple of ten (70 - 65 = 5).
Digit-by-digit view
Use the first nine digits for the calculation. Starting from the right, double every other digit. The last digit is the check digit and is not part of the calculation.
Step 1: Double every other digit from the right
Starting with the rightmost digit of the first nine digits, double every other value. If doubling creates a two-digit number, add those digits together.
Step 2: Add all digits plus the NPI constant
Add the transformed values, the unchanged digits, and the constant 24.
Step 3: Find the amount needed to reach the next multiple of 10
The next multiple of ten after 65 is 70. The difference is the calculated check digit.
Other Providers at the Same Location
The following 16 providers are registered at the same or a nearby location.
GRAND RAPIDS, MI 49546
GRAND RAPIDS, MI 49546
GRAND RAPIDS, MI 49546
GRAND RAPIDS, MI 49546
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1235188525, enumerated as an "individual" on May 06, 2006.
The provider is located at 4070 LAKE DR SE SUITE 201 GRAND RAPIDS, MI 49546 and the phone number is (616) 774-8200.
Internal Medicine with taxonomy code 207R00000X.
The provider might be accepting Accepts: Blue Cross Blue Shield of Michigan Mutual. Please consult your insurance carrier or call the provider to verify.
